LG G4F-DA2V - Page 33

Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS
6 - 1
Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS
The D/A conversion module has the buffer memory for communication of data with the PLC CPU.
6.1 Buffer Memory Configuration
This shows buffer memory configuration.
Address
(decimal)
G3F-DA3V
G4F-DA3V
G4F-DA2V
G6F-DA2V
G3F-DA3I
G4F-DA3I
G4F-DA2I
G6F-DA2I
Descriptions
Detail
Descriptions
Non-initialization Remarks
0
○ ○ ○ ○
Digital input value
specification to channel 0
R/W
1
○ ○ ○ ○
Digital input value
specification to channel 1
"
2
○ ○ ○ ○
Digital input value
specification to channel 2
"
3
○ ○ ○ ○
Digital input value
specification to channel 3
"
4
○
-
○ -
Digital input value
specification to channel 4
"
5
○
-
○
-
Digital input value
specification to channel 5
"
6
○
-
○
-
Digital input value
specification to channel 6
"
7
○
-
○
-
Digital input value
specification to channel 7
Specify digital
data for D/A
conversion to
these areas.
(-48~4047)
G4F-DA3V / G4F-DA2V
/ G6F-DA2V :
Digital data is specified
to " 2000".
G4F-DA3I / G4F-DA2I /
G6F-DA2I / G3F-DA3I /
G3F-DA3V:
Digital data is specified
to " 0".
"
The buffer memory of G3F-DA3V, G3F-DA3I, G4F-DA3V and G4F-DA3I are same. And the buffer memory of G4F-
DA2V, G6F-DA2V, G4F-DA2I and G6F-DA2I are same.
6.2 Buffer Memory Function
▶ Each address of buffer memory has been occupied by one word, and it is displayed as 16 Bit.
▶ Each address is composed of 16 Bit, and each Bit can be executed by specifying Bit on to 1 or Bit off to 0.
1) Digital input value can be used within the range 0 to 4000.
2) When digital input value isn't set, digital input value has to be set as follows.
Voltage output(G4F-DA3V/G4F-DA2V/G6F-DA2V) : 2000
Current output(G3F-DA3I/G4F-DA3I/G4F-DA2I/G6F-DA2I) : 0
Voltage output(G3F-DA3V) : 0